10.Conclusion
Obtaining a good amount of active protein at low cost is the main objective in in vitro refolding of recombinant protein from bacterial inclusion bodies but there is no single refolding technique or method thatsatisfies allprotein refolding processes. With providing a good condition for in vitro refolding of inclusion body, bacterial system could be an excellent alternative to the mammalian expression system or other expression systems that can directly generate active proteins with a complex disulfide bond structure. In this process, the solubilized target protein is subjected to refolding using different methods. Increasing protein concentrations during the refolding process improves protein refolding and the final refolding yield. Refolding aiding chemicals are helpful agents for increasing protein concentration especially in dilution method. Therefore, application and optimization of additives concentration is a main step in protein refolding and should be done for each protein individually.